text: var DnaTranscriber = function(){};
  var _dnaToRnaMap = {
  	'G': 'C'
  	,'C': 'G'
  	,'T': 'A'
  	,'A': 'U'
  };
  DnaTranscriber.prototype.toRna = function(_dnaSequence){
  	var _rnaSequence = '';
  	var _length = _dnaSequence.length;
  	for(var _i = 0; _i < _length; ++_i){
  		_rnaSequence += _dnaToRnaMap[_dnaSequence[_i]];
  	}
  	return _rnaSequence;
  };
  module.exports = DnaTranscriber;
  